add of variable for main colors

src/components/Projects/Projects.css

@@ -12,8 +12,8 @@
 
 .projects-link {
     display: inline-block;
-    color: #B0B0B0;
-    border: 1px solid #B0B0B0;
+    color: var(--text-color);
+    border: 1px solid var(--text-color);
     background-color: transparent;
     padding: 12px 28px;
     border-radius: 8px;
@@ -23,7 +23,7 @@
 }
 
 .projects-link:hover {
-    background-color: #B0B0B0;
+    background-color: var(--text-color);
     color: #1E1E1E;
     transform: translateY(-3px);
     cursor: pointer;
@@ -50,7 +50,7 @@
 
 .projects-section-subtitle {
     font-size: 1.2rem;
-    color: #B0B0B0;
+    color: var(--title-color);
 }
 
 .projects-back-link {